Electric arc lamp



- Patented Mar. 7, |699.

M. S. UKUN.

ELECTRIC ABC LAMP.

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' Arm/mfr Patented Mar. 7, |899. M. S. UKUN.

ELECTRIG ARC LAMP.

(Applcltion led Inn. 16, 1896.` newed Aug. 11,1898.)

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'UNITEDA STATES PATENT OFFICE.

MOSES S. OKUN, OF NEV YORK, N. Y.

ELECTRIC-'ARC LAMP.

SPECIFICATION forming part of Letters Patent No. 620,665, dated March 7,1899.

Application filed January 16,1896. Renewed August 11, 1898. Serial No.688,403. (No model.)

. To @ZZ whom t may concern:

Be it known that I, MOSES S. OKUN, a citizen of the United States,residing in New York city, county and State of New York, have inventedcertain new and useful Improvements in Arc-Lamps, of which the followingis a specification.

My invention relates to the class of arclamps having closed globes andalso to improved carbon-feedin g mechanisms; and one of the objects ofmy invention is to provide improved means for keeping gases in thepresence of the carbons, while permitting proper feeding of the carbon.This portion of the invention consists in the combination of a globeclosed below the arc with a tube communicating therewith, acarbon-feeder and a plug, plunger, or enlargement carried thereby andlit-ting snugly in said tube, so that it can travel therein and yetretard the passage of air and Igases into and from the globe. The upperend of this tube is closed by a laterally-movable apertured platethrough which the carbon-feeder passes, and said tu be leads to atightly-closed mechanism-box.

The improved carbon-feeding mechanism consists of a solenoid and a corehaving a bore to receive the carbon-feeding rod, a support or platecarried by said core, a pivoted finger or dog carried byl said support,a lever also pivoted on said support and adapted to act on said fingeror dog, and an abutment to act on said lever to regulate the pressure ofsaid lever or dog on said carbon-feeding rod.

The invention also consists in the combination, with a carbon-clutchingmechanism, of a solenoid and core and an iron casing inclosing saidsolenoid and ttin g snugly thereto to increase the magnetic actionthereof.

The invention also consists in the novel details of improvement and thecombination of parts that will be more fully hereinafter set forth andthen pointed out in the claims.

Reference is to be had to the accompanying drawings, forming partshereof, wherein- Figure 1 is a vertical section, partly in elevation,ofan arc-lamp embodying my improvements. Fig. 2 is a partly-sectional sideelevation of a lamp, showing a slight change in detail. Fig. 3 is asectional View of the lamp,

showing my improvements applied to a flexi- `ble carbon-carrier; andFigs. 4 and 5 are sectional views showing other details.

In the accompanying drawings, in which 'similar numerals of referenceindicate corresponding parts in the several views, the num-l 'cover or'plate 6 by suitable springs 7, which also serve to draw the partstogether to make a tight fit between the globe and said plates.

In Figs. 1 and 3 the tube 2 is shown opening directly through the plate6 into the globe to permit the carbon 5 to feed into the globe. 8 is acarbon rod or carrier, which may be actuated by suitable mechanism, andit supports the carbon in suitable manner to feed the upper carbon. Thisrod or carrier 8 carries a plug, plunger, or disk 9, which fits snuglyin the tube 2 to retard the passage of air or gas and yet in such mannerthat it can readily travel in said tube. The plug or disk 9 may beinsulated from the carrier 8 by suitable insulation 10, Fig. 1, or maybe made of insulating material. This plug or disk 9 may be provided withone or more annular recesses 11, by which annular rims 12 are formed,whereby air can be checked from passing. To further prevent the passageof air and gases .into and from the tube 2 and globe 3, I place anapertured plate or washer 13 over the npper end of tube 2 and within thebox 1, through which plate the carbon rod or carrier 8 passes. Thisplate or washer 13 has lateral movement to reduce friction on the carbonrod or carrier and yet retards the passage of air and gas. The box orcasing v1 is preferably.air-tight, with suitable provision, as a door,to permit access toits contained mechanism.

By means of the devices above described the life of the carbons will beprolonged in well-known manner, and the upper carbon can have freefeeding movement through the IOO tube 2 and in the globe 3. Furthermore,a short globe can be used and most of the npper carbon can be consumedwhen the tube 2 opens directly into the globe 3, as the carbon-holderhas free passage into the globe.

In Figs. 2, at, and 5 the globe 3 is provided with a supplemental coverG, fitting` directly on the globe and beneath the cover 6, and the cover 6n is provided with an aperture Gb, which is alined with the tube 2and through which the carbon 5APL passes and fits snugly therein toretard the passage-of air and gas. \Vith this arrangement the plug ordisk 9 is confined in the tube 2, as the cover G prevents it frompassing into the globe. By these means a double protection is affordedagainst the passage of air and gas. On the cover G I may place anapertured plate or washer 6C, through which the carbon 5 passes snugly,the opening 0l being larger than the carbon. The plate or washer GC haslateral movement to reduce friction on the carbon.

In Figs. I and 2 I have shown a globe or shield li, suspended from thecover or plate (i and surrounding the globe 3 to protect the latter.

In Fig. 3 the disk or plug 9 is carried by a flexible support orcarbon-carrier 8 and travels in the tube 2, thereby acting as a guidefor the carbon 5, which is suitably connected with said plug or disk.

In Fig. I the carbon feeds as in Fig. 2 and the disk or plug isdispensed with, the tightlyclosed tube 2 serving to retard the passageof air and gas.

In Fig. 5 the devices are substantially as in Fig. I, excepting that Ihave illustrated means for reducing the friction between the carbon andthe feed-aperture 6" in the cover f3. For this purpose thecarbon-carrier is shown made in jointed sections S 8b 8C, thecarbon-holder S being jointed to the section SC. It will be seen thatthe pivots (t c extend in one direction and the pivots l) Z extend inthe opposite direction, the direction of said pivots alternating. Thisjointed carbon-carrier provides a feeding medium that will positivelyfeed the carbon in a downward direction and yet permit free movement ofthe carbon in its aperture Gl'.

It will be understood that the upper carbon can be operated by anysuitable mechanism in all of the illustrations given. In Fig. I,however, I have shown an improved carbonfeeding mechanism which willproduce accurate feeding of the carbon.

16 is a solenoid, shown mounted on the top of box l, and 17 is its core,which passes through an opening in the top of the box into the latter.This core is hollow and receives the carbon-feeding rod, and said corecarries a depending support or plate I9, on which is pivoted a finger ordog 20, which acts on the rod S. The finger or rod 2O depends from itspivot 2l and has a toe or plug 22, which bears on the rod S.

23 is a lever which is pivoted between its ends on the support or platelf), the inner ends of said lever acting on the dog 2O to press thelatter against the rod S. The outer end of the lever H3 is pressed by aspring 2i to cause the dog 2O to bind on the rod S, and said spring isshown located between the lever 23 and a projection 25 on the support orplate if). The lever 23 is adapted to act on an abutment 26, carried bythe box l, to reduce and regulate the action of the spring 24 on thelever 23. The arrangement is such that when no cnrrent is passing thecore 1S will descend until lever 23 encounters abutment 26, which tiltssaid lever so that the dog 2O is relieved from pressure on the rod 8,and the latter descends until the carbons touch. As soon as currenttraverses the solenoid it will draw in its core, thus lifting thesupport 19, dog 20, and lever 23. rlhe spring 2i now acts on said lever,causing it to press dog 20 against rod 8, thereby gripping the latter,and thus lifting it and the carbon 5 to strike the arc. IVhen the arcbecomes too strong, the core sinks and the lever 23 bears on theabutment 2G to reduce the spring pressing on said lever, therebyreducing the grip of the dog on rod S, thus aln lowing the rod to feeduntil the arc is brought to the proper condition, whereupon the corerises, the dog again firmly grips the rod 8, and the carbon is heldinthe proper position, and so on, as the lamp continues to burn.

27 is a projection carried by the support if), which engages an abutment2S, carried by the box l to limit the downward movement of the core 18.

29 is an iron sleeve fitting closely around the solenoid 17 to increaseits magnetic action.

The course of the current may be traced as follows: The main wire 30leads to a bindingpost 3l on box I, then by wire to solenoid 17, whichconnects with a binding-post 33, from which a wire 3i leads to a brush35, which engages the carbon carrier S, and thence through the carbonsto the plate et, (the spring 7 being insulated from plate G.) Thecurrent may then traverse one spring 7 to a binding-post 35, carried byand insulated from the plate 6. One of the rods l may be utilized as aconductor, in which case it will be insulated from the plate (5 and fromthe box l, and a wire 3G will connect said rod with post 35. The rod lconnects with a binding-post 37 in box l, from which a wire 3S extendsto a binding-post 39, with which the main wire 30 connects; but thecourse of the current may traverse otherwise, if desired. l

Having now described my invention, what I claim is- 1. In an arc-lamp aglobe closed below the arc, a tube leading thereto and connected tightlytherewith, a carbon carrier or feeder passing into said tube, a plug orplunger carried by said carrier or feeder and fitting IOC) IIO

snugly in said tube so as to travel therein, and carbon regulating orfeeding mechanism, substantially as described.

2. In an arc-lamp, the combination of a globe closed below the arc, witha tube leading thereto and tightly connected therewith,

tube, an apertured plate or washer closing the upper end of said tube,said carbon carrier or feeder fitting snugly in the aperture in saidplate or washer, and carbon-1egulating mechanism, substantially asdescribed.

4. In an arc-lamp, a globe closed below the are, a cover thereon havingan aperture in which a carbon can snugly fit, and a tube leading to saidaperture, combined with a carbon carrier or feeder, a plug or plungercarried thereby and fitting snugly in said tube so that it can feedtherein, and carbon-feeding mechanism, substantially as described.

5. In an arc-lamp, a globe closed below the arc,a cover thereon havingan opening,a laterally-movable apertured plate or disk thereover, and atube leading to said aperture,combined with a carbon carrier or feeder,a plug or plunger carried thereby and fitting snugly in said tube so asto feed therein, and carbon-feeding mechanism, substantially asdescribed.

6. In an arc lamp, with combination of globe, a plate at its lower end,a cover or plate ou said globe, springs connecting said plates, amechanism-box, a tube connecting said top plate and box,carbonfeedingmechanism,and means for closing said tube while permitting the carbon tofeed, substantially as described.

7. In an arc-lamp, the combination of a globe, a plate at its lower end,a cover or plate on said globe having an opening, an aperturedr plate orwasher thereover to receive a carbon,

springs connecting said plates, a tube alined with the opening in thecover of the globe, a mechanism-box, a carbon-feeder in said tube, andcarbon-feedin g mechanism, substantially as described.

8. In an arc-lamp, a carbon-feeding mechanism comprising a solenoid andcore, a carbon-feeding rod, a support carried by said core, a lingerordog carried by said support and extending substantially vertically toact on said rod, a lever also carried by said support to act on saidlinger, and an abutment to act on said lever, substantially asdescribed.

9. In an arc-lamp, a solenoid and core, a carbon-feedin g rod, a supportcarried `by said core, a linger or dog having a toe and pivotallycarried by said support, a lever also pivotally carried by said supportto act on said linger or dog, and an abutment for said lever,substantially as described.

lO. In an arc-lamp, a solenoid and a core having a bore, acarbon-feeding rod in said bore, a support carried by said core, alinger or dog pivotally carried by said support and having a toe to acton said feeding-rod, a lever also carried by said support to act on saidlinger or dog, a spring acting on said lever and against a projection onsaid support, and an abutment for said lever, substantially asdescribed.

1l. In an arc-lamp, a globe closed below the arc, a tube leading theretoand connected tightly therewith, a carbon carrier or feeder, a plug orplunger carried thereby, said plug or plunger having an annular grooveforming an air-check and carbon feeding or regulating mechanism,substantially as described.

12. A carbon rod or feeder having a plurality of sections pivotedtogether, two of the pivots extending in one direction and two in theopposite direction, and a carbon-holder pivotally connected with one ofsaid sections by one of said pivots, substantially as described.

MOSES S. OKUN.

Vitnesses:

T. O. CURTIss, T. F. BOURNE.

